typedef PD3DXMATRIX (WINAPI *TD3DXMatrixLookAtLH)(
  _Inout_  D3DXMATRIX *pOut,
  _In_     const D3DXVECTOR3 *pEye,
  _In_     const D3DXVECTOR3 *pAt,
  _In_     const D3DXVECTOR3 *pUp
);

TD3DXMatrixLookAtLH OldD3DXMatrixLookAtLH;

DllExport PD3DXMATRIX cc D3DXMatrixLookAtLH(
  _Inout_  D3DXMATRIX *pOut,
  _In_     const D3DXVECTOR3 *pEye,
  _In_     const D3DXVECTOR3 *pAt,
  _In_     const D3DXVECTOR3 *pUp
)
{
	return OldD3DXMatrixLookAtLH (pOut, pEye, pAt, pUp);
}